.explain-wrap {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100%;
  height: 100%;
  box-sizing: border-box;
  padding: 0vw;
  z-index: 1000;
}
.explain-wrap .content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 50;
}
.explain-wrap .content .txt {
  display: block;
  width: 42.9166vw;
  margin-bottom: 1.5625vw;
}
.explain-wrap .content .btn {
  display: block;
  width: 20.8333vw;
  margin: 0 auto;
}
.explain-wrap .bg {
  display: block;
  width: 100%;
  height: 100%;
  z-index: 10;
}
.startup-wrap {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 10;
}
.startup-wrap video {
  width: 100%;
  height: 100%;
  object-fit: fill;
}
.directory-wrap {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}
.directory-wrap .list {
  position: absolute;
  width: 100%;
  height: 100%;
  z-index: 1000;
}
.directory-wrap .list .item {
  position: absolute;
  width: 14.5833vw;
  height: 10.4166vw;
}
.directory-wrap .list .item.item1 {
  left: 20.8333vw;
  bottom: 13.0208vw;
}
.directory-wrap .list .item.item2 {
  left: 43.75vw;
  top: 14.5833vw;
}
.directory-wrap .list .item.item3 {
  right: 30.7291vw;
  bottom: 13.0208vw;
}
.directory-wrap .list .item.item4 {
  top: 14.5833vw;
  right: 10.9375vw;
}
.directory-wrap .bg {
  width: 100%;
  height: 100%;
  background: url("//qiniu.charmofjiangsu.com//directory2.mp4?vframe/jpg/offset/1") no-repeat;
  background-size: 100% 100%;
}
.directory-wrap .bg video {
  width: 100%;
  height: 100%;
  object-fit: fill;
}
.start-toast {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) translateZ(10px);
  width: 100%;
  height: 100%;
  box-sizing: border-box;
  padding: 1.5625vw;
  z-index: 500;
}
.start-toast .content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}
.start-toast .content .txt {
  display: block;
  width: 30.1041vw;
  margin-bottom: 1.3541vw;
}
.start-toast .content .btn {
  display: block;
  width: 20.8333vw;
  margin: 0 auto;
}
.start-toast .bg {
  display: block;
  width: 100%;
  height: 100%;
}
